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Ted Yu commented on HBASE-8119: ------------------------------- @Enis: The following javadoc warnings appear in several QA test report: [WARNING] /home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.java:373: warning - @param argument "initialRegionMapping" is not a parameter name. [WARNING] /home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.java:373: warning - @param argument "clusterState" is not a parameter name. Please fix them. Thanks > Optimize StochasticLoadBalancer > ------------------------------- > > Key: HBASE-8119 > URL: https://issues.apache.org/jira/browse/HBASE-8119 > Project: HBase > Issue Type: Bug > Components: Region Assignment > Affects Versions: 0.95.0 > Reporter: Enis Soztutar > Assignee: Enis Soztutar > Priority: Critical > Fix For: 0.98.0, 0.95.1 > > Attachments: hbase-8119_v2.patch, hbase-8119_v3.patch > > > On a 5 node trunk cluster, I ran into a weird problem with > StochasticLoadBalancer: > server1 Thu Mar 14 03:42:50 UTC 2013 0.0 33 > server2 Thu Mar 14 03:47:53 UTC 2013 0.0 34 > server3 Thu Mar 14 03:46:53 UTC 2013 465.0 42 > server4 Thu Mar 14 03:47:53 UTC 2013 11455.0 282 > server5 Thu Mar 14 03:47:53 UTC 2013 0.0 34 > Total:5 11920 425 > Notice that server4 has 282 regions, while the others have much less. Plus > for one table with 260 regions has been super imbalanced: > {code} > Regions by Region Server > Region Server Region Count > http://server3:60030/ 10 > http://server4:60030/ 250 > {code} -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira